Tire construction



July l?, 11923. RAASLQMf F. B. PFEIFFER TIRE CONSTRUCTION Filed oct. 17, 1921 `lli?atenteral duly l?, lldlo FRED BRUWN PFHJ'FFER, Oli' AJKRGN, UEE@ TERE CUNSTRUGTKON.,

Application. tiled October l?, 19531.

.To all lwhom t may concern:

Be it known that l, FRED lB. Prnrrrnn, a citizen of the United States, residin at Akron, in the county of Summit and State of hiO, have invented a new and useful rlire Construction, of which the following is a speciiication.

rlhe device forming the subject matter of this application is a pneumatic tire carcass or casing, and the invention aims so to locate a plurality ot' cords in the casing that the casing will have a yieldable tread and relatively rigid side portions.

llt is Within the province of the disclosure to improve generally and to enhance the utility ot devices of that type to which the invention appertains.

W ith the above and other objects in View, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details or construction hereinafter described and claimed, it being understood that, Within the scope oft what is claimed, changes 'in the precise embodiment of they invention shown can be made Without departing from the spirit of the invention,

ln the accompanying drawings1 Figure l shows in plan, a portion of a casing constructed in accordance With the invention, the same Ming laid out dat; Figure 2 is a side elevation wherein the parts are in the positions which they will assume in the casing; Fi ure 3 is a cross section on the line 3-3 of igure 2; and Figure t is a fragmental side elevation showing a modiication.

The casing forming the subject matter oi this application embodies a plurality of cords the body portions of which are extended in approximately parallel relation, as indicated at l, across the tread of the casing, in planes at an angle to the axis of the casing, and, preferably, in planes at right angles to the axis of the casing, the ends of adjacent cords being crossed on each other as at 2, and being inclined, with respect to the body portions in opposite directlons, circumferentially of the casing, as shown at 3. lin referring above to the axis of the casing, l mean a circumferential longitudinal line passing through the center of an cross section of the casing, and not the axis on which the Wheel carrying the casing revolves when the Wheel rolls with the casing in contact With-the ground.

serra ne.' maare.

llt desired, the cords may be disposed in groups, as shown at t in Figure d, the cords of the groups being crossed upon each other as at 5, and being inclined in opposite directions, circumterentially of the casing, as shown at 6.

rlhe construction of the device is such that the casing will have a yieldable tread portion and relatively rigid side portions. The construction gives the cords an anchorage on the base portion oi3 the tire, so that, as the torque is applied to the tire, alternate cords or groups of cords are under tension throughout their entire length, from bead to bead, the result being an even distribution oi the torque on both beads, equally, by the same cord. ln the ordinary and common construction, the cords ot a tire run diagonally across the carcass, and, as a consequence, each cord is under tension from the bead portion to the central tread portion, and under compression from the central tread portion to the opposite bead, one layer or cords taking the torque on one bead, and the next layer taking the torque to the opposite bead, thereby causing a pulling or sawing action between the alternate layers of cords. The plies are separated as a consequence. ln the device forming the subject matter of this application, the foregoing undesirable results do not obtain. Further, in the device forming the subject matter of this application, the cords are so interengaged that the cords which are inclined in one direction, circumferentially of the casing, tend to keep in place, the cords which are inclined circumferentially ot the casing in an opposite direction.

Having thus described the invention, what is claimed is:

1, A tire casing embodying cords the body portions of Which are extended in approxr mately parallel relation across the tread of the casing, the ends of adjacent cords bein crossed upon each other and being incline with respect to the body portions, in opposite directions circumferentially oi the casing.

2. A tire casing embodying cords the body portions of which are extended in approximately parallel relation across the tread of the casing in planes at an angle to the axis of the casing, the ends of adjacent cords being crossed upon each other and being inclined, With respect to the body portions, in opposite directions crcumerentially out the casing.

3. A tire casing embodying cords the body ends which are inclined in an opposite direcportions of which are extended in approxition being parallel to each other. mately parallel relation across the `tread 'of In testimony that I claim the foregoing as the casin in planes in right angles to the axis my own, I have hereto axed my signature 5 ofthe casmg, the endshof adjacent cords peing in the presence of two witnesses.

crossed upon each ot er and being inc ined with respect to the body portions in opposite, FRED BROWN PFEIFFER directions circumferentially of the casing, Witnesses: those ends which `are inclined in one direc- H. H. WESENER, l0 tion being parallel to each other, and those L. G. MISHLER. 

